Gerry, Rocky and Lassie fly to New York to meet Rocky's publisher. Lassie leaves the briefcase with the manuscript behind to save a child at the airport. From the hotel, Lassie sets out to retrieve it.

Flying back to their homestead, our friends are caught by a storm, forcing capitao Jorge to crash-land the plane in the jungle. Gerry, Rocky and Lassie stay at a Bororo village known to capitao Jorge, while he goes for help.